Ensure the card type ( iom3-xp-b or others) matches the capability of the 12.0.R6 image.
Because network professionals rely heavily on virtualization to test configurations before production deployment, this specific software version serves as a foundational piece for building high-fidelity routing simulations. What is TiMOS / SR OS? Timos-sr-12.0.r6-vm.zip Download
Which are you using? (e.g., EVE-NG , GNS3 , or raw QEMU ?) Ensure the card type ( iom3-xp-b or others)